dunbar



Aug. 21, 1923.

D. DUNBAF TIE FOR MASONRY Filed Nov. 26, 1919 ug. 2l, 1923.v

Filed Nov, 26, 1919 D. DUNBAR TIE FOR MAS ONRY 3 Sheets-Sheet 2 Aug. 21, 1923. 1,465,812

` D. DUNBAR TIE FOR MASONRY Filed Nov. 26, 1919 3 Sheets-Sheet 5 m11 mh* 1 uw j i Il" Il" Hill Illll lll/H1111 Patented Aug. 2l, 1923.

UNITED STATES PATENT' OFFICE.

DAVID DUNBAR, F GLASGOW, SCOTLAND, ASSIGNOR TO THE LENNOX `JlIANI'IFAC- TUBING COMPANY, LIMITED, 0F DUNTOCHER, DUMBARTONSHIRE, SCOTLAND.

TIE FOR MASONRY.

Application led November 26, 1919. Serial No. 340,744..

l To all whom it may concern: l

Be it known that I, DAVTD DUNBAR, a sub'ect of the King of Great Britain and Ireland and the Isle of'Man, and a resident l 5 of Glasgow, Scotland, engineer andmaster tof works, have invented new and useful Improvements in Ties for Masonry, or which the following is a specification.

This invention has reference to improvements in and relating to holdrast devices lfor retaining'wooden straps, laths and the like in dwelling houses, and other brickwork,

stonework, concrete and like structures.

According to my improvements the holdfast devices would consist of galvanized sheet metal or the like, and be of a U channel, or like formation outside the line of brickwork or the like to enclose and hold the wooden strap, lath or the like; while it would have an inwardly radial or projecting arm or arms, 0r split arms to fit over j and be embedded in the brickwork or thev like.

These radial arms would preferably be formed of a vertical side and top horizontal formation, or vice versa, next the projecting out holding part for the woodwork beyond the brick or like wall, and be embedded between thev courses of the stretchers and $0 headers of the brickwork or like structure.V

These holdfast devices can be embedded between the series of bricks or the like at an spaced distances apart, and be placed eit er horizontally or vertically. And in order that my said invention and the manner of carrying the 'same into eilect or practice may be properly understood I have hereunto appended three sheets of explanatory drawings in which the same reference 40 letters are used to indicate corresponding parts in all the figures where shown.

Figure l on Sheet 1 shows a view of a holdfast construction according tomy invention for holding one wooden strap, lath or the like.

j Fi ure 2 shows the same construction for holding two wooden laths.

Fi re 3 is a transverse section as taken on t e line 3 3 of Figure l, and 3-3 of Figure 2.

igures 4 and 5 are similar views to Figure 1 but showing the channel shaped holder inverted for carrying the strap or the like, and the radial arms slightly modified.

While Figure 6 is a transverse section as a like view or holdi'iast corresponding to F igi ure 2 on Sheet l.

Figure 9 on Sheet 3 shows a perspective i view of the practical application of the holdfast sho-wn on Figure 5, while Figure l() on same sheet shows a horizontal section showing .the practical application of the modification -olholdfast shown in Figure 4 of Sheet l.

Referring to. these drawings- As shown in Figure l the holdfast-devices consist of a metal U channel or like formed part A outside the line of brickwork or other material forming the wall or building to enclose and hold the wooden strap, lath or the like, and the radial arm B whichmay be split or divided as shown in Figures 6a or. 6b is arranged to lit over and be embedded in the brickwork or other material, the device being formed with a twist at B2.

In Figure l the end B1 of the armk B, which isshown broken` away is formed of a kneed or like shape to grip the sideof the wall.

In Figure 6b this end B1 is shown split.

In the arrangement shown at Figure 6a the end of the arm Bremote from the part A is split `into projecting arms or it may be otherwise made of a broader cross section than the arm B. By this means it is not necessary that this end should project beyondV the brickwork or, the like as the broadened end prevents the longitudinal displacement of the device.

A vertical web C is formed on the arm B to be placed in the joints and abut against the material forming the wall.k

In Figure 2 the radial arm B is shown as formed with the web C and as having channel shaped holder pockets on each end to carry the straps, laths or the like. Y j

In Figures t and 5 the holder channel A is shown as inverted to carry the straps, laths or the like when these are arranged solid wall.` auf!y vertically, andzthe radial arm Bis shown as partially .turned over flat horizontally-Y With a Hange at D which is equivalenty to the-web C showninFigures l and 2, `while in Figure` thefarmi'sgiven a twisted formationat B2. `But in any these modifications the channels A can be arrangedto .be set either vertically or horizontally by simply inverting or reversing or setting at right.

angles and eitherto right or left the position of the channelsA to suit the position off the Wooden straps or the like,

Instead of forming the part A of channel shape the outside limb of same maybe d ispensedwithV and the wooden'strap E be attached to the inner limb by bolts, screws or like devices,

Figures 7l and 8 are vertical sections of the Wall F of a building whe-rein the constructions of holders illustrated-in Figures l and 2 are respectively shown to practical application. In these cases the holdfasts A are.

shown as carrying the wooden straps E embedded in the plaster G and the arms B as passing through the brickwork F, above the floor H'and cove skirting I.

In Figure 9y the application of the modification of'holderiillustrated in Figure 5 is shown as applied in an analogous manner to that shown in Figures 7 and A8 but withV and also at bbetween the outer surface or'v said channel Aand the brickwork or equivalent material F of which the building is constructed.y

What Ilclaim as my invention is 1. A' holdfast device comprising an armv adapted to be embedded Vin the brickwork,

stonework andthe like,vmeans at one end thereof for preventing longitudinal displacement of the device, and a channel portion at. the other end thereof adapted, to retain awooden strap, lath andthe like in position, said channel portion being bent to bear ont-he face of the wall and again bent to form an air space between the wall and the saidwoodenstrapylath and the like.

2. A holdiast device comprising an arm adapted torbe embedded in the brickwork, stonework and the like, and a channel ormation at each endv thereof adapted toretain a Wooden strap, lath or the like in'position and to prevent'longitudinal'displacement of the device, said channel-portions being bent Vto hear on the face of the Awall and again bent to form an air space between the walland ythe said wooden-strap, lathand the like supported thereby.

3. A holdiast device comprising an arm Yadapted to be embedded -in the brickwork,

stonework and the like, a flange extending longitudinally thereof, means atfone endof the saidA arm forV preventing longitudinaly displacement ofthe device, andla` channel stonework and the like', a flange ertending longitudinally thereof, and a channelfformation at each end ot said 4arm adapted toA retain a wooden strap, lath and the like in position and to prevent` longitudinal displacement of the device, said channel portions being bent to bear on the face of ther wall and again bent to form an air space between the wall andthe said woodenstrap, lath and thelike supportedA thereby.

DAVID DUNBAR.A

litnesses:

JOHN Smm, 'Y-f' ERIC I. GALL. 

